[bombcar]

Typing "hey commandlinefan where is your list of ssh shortcuts?" is the best, as it's polite (could be politer I assume but it's not just a give me), and it gets you everything you need to know to answer (or if you do) right there. Maybe doing military style with "most important" first would be nicer "ssh shortcuts - hey commandlinefan, where's the list" but that's a minor thing.

Typing "hey"

and then "where's the ssh shortcuts" in quick succession isn't as great (buzzes the phone twice perhaps) but at least by the time you look at it you see what's needed.

Typing "hey"

and not adding anything more until you get "hello" back - this is what drives people up the wall. It's adding a SYN/ACK on top of TCP/IP and greatly slows down chat communications. I've had a "hello" and then immediately replied "hey" and then not heard anything for hours.